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Respiratory Virus Report, Week 16 - ending April 23, 2022

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Organization: Public Health Agency of Canada

In this Respiratory Virus Report, the number of detections of coronavirus reflects only seasonal human coronaviruses, not the novel pandemic coronavirus (SARS-CoV-2) that causes COVID-19. For information on COVID-19, see the Coronavirus disease (COVID-19): Outbreak update

Overall Summary

Detections of seasonal respiratory viruses have increased since February 2022, with influenza accounting for most of the increase in recent weeks. Activity of all respiratory viruses is within or below expected levels for this time of year.

  • Influenza is the most common seasonal respiratory virus detected in Canada.
    • A total of 1,035 influenza detections were reported (1,033 influenza A, 2 influenza B).
    • Activity of influenza A (6.8% positive) continues to increase, and is near average levels for this time of year.
  • Activity of other respiratory viruses is low; however, activity of seasonal human coronavirus (151 detections; 4.9% positive) has increased in recent weeks but is within expected levels.
  • The number of tests performed for all viruses were above expected levels.
  • 32/34 sentinel laboratories reported surveillance data.

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Abbreviations:
Flu
Influenza
A(H1)pdm09
Influenza A(H1N1)pdm09
A(H3)
Influenza A(H3N2)
A(UnS)
Influenza A(Unsubtyped)
RSV
Respiratory syncytial virus
HPIV
Human parainfluenza virus
HMPV
Human metapneumovirus
ADV
Adenovirus
EV/RV
Enterovirus/Rhinovirus
HCoV
Human coronavirus
Atl
Atlantic Canada
BC
British Columbia
Can
Canada
EORLA
Eastern Ontario Regional Laboratory Association
HSC
Health Sciences Centre
N.C.
Data not collected
N.R.
Data not reported for current week
ON
Ontario
PR
Prairies
P.H.O.L.
Public Health Ontario Laboratory
QC
Quebec
Terr
Territories of Canada
UHN
University Health Network

Respiratory virus detections

Table 1: Respiratory virus detections for the week ending April 23, 2022 (surveillance week 2022-16)
Reporting Laboratory Flu Tested A(H1)pdm09 Positive A(H3) Positive A(UnS) Positive Total Flu A Positive Total Flu B Positive RSV Tested RSV Positive HPIV Tested HPIV 1 Positive HPIV 2 Positive HPIV 3 Positive HPIV 4 Positive Other HPIV Positive ADV Tested ADV Positive HMPV Tested HMPV Positive EV/RV Tested EV/RV Positive HCoV Tested HCoV Positive
Newfoundland 80 0 0 1 1 0 80 0 80 0 0 0 0 0 80 1 80 0 80 4 N.C. N.C.
Prince Edward Island 34 0 0 0 0 0 34 8 34 0 0 0 0 0 34 2 34 6 34 13 34 3
Nova Scotia 646 0 1 22 23 0 646 5 27 0 0 0 1 0 27 0 27 0 27 1 27 1
New Brunswick 669 0 0 3 3 0 576 4 136 0 0 0 0 0 136 0 136 0 136 4 136 0
Atlantic 1429 0 1 26 27 0 1336 17 277 0 0 0 1 0 277 3 277 6 277 22 197 4
Région Nord-Est 992 4 0 182 186 0 479 0 2 0 0 0 0 0 2 0 2 1 N.C. N.C. 2 0
Québec-Chaudière-Appalaches 441 0 0 106 106 0 444 1 32 0 3 0 0 0 123 7 122 3 N.C. N.C. 86 2
Centre-du-Québec 366 0 0 86 86 0 327 0 18 0 0 1 1 0 18 0 18 0 N.C. N.C. 18 3
Montréal-Laval 835 0 1 123 124 1 805 1 213 1 9 2 0 0 213 11 213 4 N.C. N.C. 213 17
Ouest du Québec 307 0 2 83 85 0 307 1 8 0 1 0 0 0 8 0 8 0 N.C. N.C. 8 0
Montérégie 119 0 0 13 13 0 85 0 0 0 0 0 0 0 0 0 0 0 N.C. N.C. 0 0
Province of Québec 3060 4 3 593 600 1 2447 3 273 1 13 3 1 0 364 18 363 8 N.C. N.C. 327 22
P.H.O.L. - Ottawa 64 0 3 0 3 0 64 0 64 0 0 0 0 1 64 0 64 0 64 3 64 1
EORLA 135 0 0 6 6 0 135 0 24 0 0 0 0 0 24 0 24 0 24 3 24 2
P.H.O.L. - Kingston 34 0 1 0 1 0 34 1 34 0 0 0 0 0 34 0 33 0 34 4 33 1
UHN / Mount Sinai Hospital 526 0 0 3 3 0 526 1 17 0 0 0 0 0 17 0 17 0 17 0 17 1
P.H.O.L. - Toronto 257 0 7 0 7 0 257 1 257 0 0 0 0 5 257 8 256 6 257 13 256 11
Sick Kids Hospital - Toronto N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R.
Sunnybrook & Women's College HSC N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R. N.R.
P.H.O.L. - Sault Ste. Marie 7 0 0 0 0 0 7 0 7 0 0 0 0 0 7 0 7 0 7 0 7 0
P.H.O.L. - Timmins 14 0 0 0 0 0 14 0 14 0 0 0 0 0 14 0 14 0 14 0 14 0
St. Joseph's - London 53 0 0 4 4 0 53 0 53 0 0 0 0 1 53 2 53 1 53 3 3 0
P.H.O.L. - London 78 0 3 0 3 0 78 0 78 0 0 0 0 2 78 2 78 1 78 11 78 8
P.H.O.L. - Orillia 20 0 0 0 0 0 20 3 20 0 0 0 0 2 20 1 20 1 20 6 20 4
P.H.O.L. - Thunder Bay 7 0 0 0 0 0 7 0 7 0 0 0 0 0 7 0 7 0 7 5 7 0
P.H.O.L. - Sudbury 6 0 1 0 1 0 6 0 6 0 0 0 0 0 6 0 6 0 6 0 6 0
P.H.O.L. - Hamilton 46 0 0 0 0 0 46 0 46 0 0 0 0 1 46 0 46 3 46 0 46 5
P.H.O.L. - Peterborough 11 0 0 0 0 0 11 0 11 0 0 0 0 0 11 0 11 0 11 2 11 2
St. Joseph's - Hamilton 601 0 0 6 6 0 601 2 601 0 0 1 0 0 601 2 601 9 601 27 0 0
Province of Ontario 1859 0 15 19 34 0 1859 8 1239 0 0 1 0 12 1239 15 1237 21 1239 77 586 35
Province of Manitoba 1187 0 9 42 51 0 1187 62 113 0 0 0 1 0 113 3 139 2 113 14 139 1
Province of Saskatchewan 702 0 1 78 79 0 702 141 184 0 0 0 7 0 184 4 184 2 184 23 184 13
Province of Alberta 2504 0 40 105 145 0 982 90 982 0 8 5 10 0 982 9 982 28 982 63 982 29
Prairies 4393 0 50 225 275 0 2871 293 1279 0 8 5 18 0 1279 16 1305 32 1279 100 1305 43
British Columbia 4347 0 11 0 78 1 4097 61 660 0 1 1 10 5 660 17 660 10 645 80 645 47
Yukon 76 0 0 0 0 0 76 1 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 59 0 18 1 19 0 57 10 2 0 0 0 0 0 2 0 2 0 57 8 2 0
Nunavut 67 0 0 0 0 0 67 8 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Territories 202 0 18 1 19 0 200 19 2 0 0 0 0 0 2 0 2 0 57 8 2 0
Canada 15290 4 98 864 1033 2 12810 401 3730 1 22 10 30 17 3821 69 3844 77 3497 287 3062 151

The data in the RVDSS report represent surveillance data available at the time of writing. Data not collected by reporting lab denoted by N.C.

The reporting laboratory previously listed as CHEO - Ottawa is now listed as EORLA to better reflect data submitted by this provider.

Specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.

Results from British Columbia comprise of specimens from the following sites: BC Children's and Women's Hospital, Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Powell River Hospital, St. Paul's Hospital, Vancouver General Hospital, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Delays in the reporting of data may cause data to change retrospectively.

For British Columbia, only data from subtyped influenza A specimens are included in the weekly number of influenza detections. The sum of A(H1N1)pdm09, A(H3), and A(UnS) positive results may not equal the sum of total Flu A positive results.

Table 2: Cumulative respiratory virus detections from August 29, 2021 to April 23, 2022 (surveillance weeks 2021-35 to 2022-16)
Reporting Laboratory Flu Tested A(H1)pdm09 Positive A(H3) Positive A(UnS) Positive Total Flu A Positive Total Flu B Positive RSV Tested RSV Positive HPIV Tested HPIV 1 Positive HPIV 2 Positive HPIV 3 Positive HPIV 4 Positive Other HPIV Positive ADV Tested ADV Positive HMPV Tested HMPV Positive EV/RV Tested EV/RV Positive HCoV Tested HCoV Positive
Newfoundland 8547 0 0 1 1 0 8546 102 8549 1 7 116 0 154 8556 30 8543 33 8550 1757 N.C. N.C.
Prince Edward Island 2137 0 1 0 1 0 2137 224 2092 0 0 154 0 0 2137 58 2137 30 2137 510 2137 114
Nova Scotia 17384 0 2 62 64 5 17383 317 1463 0 2 39 13 0 1477 13 1477 6 1477 114 1477 37
New Brunswick 14659 0 0 11 11 0 9266 272 2884 0 0 23 4 0 2877 17 2884 6 2884 52 2793 7
Atlantic 42727 0 3 74 77 5 37332 915 14988 1 9 332 17 154 15047 118 15041 75 15048 2433 6407 158
Région Nord-Est 18822 5 0 272 277 3 8112 1439 792 0 0 9 1 0 891 17 394 8 N.C. N.C. 1230 21
Québec-Chaudière-Appalaches 5594 0 0 163 163 4 6185 995 1471 0 10 7 10 0 1746 75 1656 71 N.C. N.C. 1478 48
Centre-du-Québec 6562 0 0 150 150 4 6627 1081 602 0 3 22 1 0 602 31 610 20 N.C. N.C. 595 16
Montréal-Laval 19945 0 3 308 311 6 19897 2450 6848 7 27 27 5 0 6847 404 6845 340 N.C. N.C. 6844 116
Ouest du Québec 5101 0 4 114 118 0 5043 930 111 0 3 3 4 0 104 7 100 1 N.C. N.C. 100 3
Montérégie 3011 0 0 37 37 0 2940 387 0 0 0 0 0 0 0 0 0 0 N.C. N.C. 0 0
Province of Québec 59035 5 7 1044 1056 17 48804 7282 9824 7 43 68 21 0 10190 534 9605 440 N.C. N.C. 10247 204
P.H.O.L. - Ottawa 6628 2 11 0 13 0 6628 1439 6628 0 0 0 0 733 6628 311 6626 40 6628 2227 6626 270
EORLA 5923 0 0 16 16 0 5898 608 853 0 2 19 1 0 853 15 534 4 853 148 511 19
P.H.O.L. - Kingston 1294 0 4 0 4 0 1293 125 1292 0 0 0 0 129 1292 19 1285 2 1292 298 1285 88
UHN / Mount Sinai Hospital 15861 0 0 24 24 3 15861 99 504 0 0 0 0 0 504 0 504 1 504 13 504 5
P.H.O.L. - Toronto 8346 2 13 1 16 0 8334 275 8334 0 0 0 0 285 8337 116 8331 22 8334 985 8332 267
Sick Kids Hospital - Toronto 839 0 0 0 0 0 0 0 839 0 2 68 1 0 839 12 839 1 839 233 839 10
Sunnybrook & Women's College HSC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
P.H.O.L. - Sault Ste. Marie 300 0 2 1 3 0 299 5 299 0 0 0 0 7 299 3 299 1 299 50 299 18
P.H.O.L. - Timmins 385 0 0 0 0 0 385 25 385 0 0 0 0 18 385 1 385 0 385 31 385 26
St. Joseph's - London 12453 0 0 40 40 0 12456 766 10899 0 0 7 0 87 10899 135 10899 31 10853 558 519 2
P.H.O.L. - London 3192 0 8 1 9 0 3191 452 3191 0 0 0 0 159 3191 75 3190 14 3191 444 3190 249
P.H.O.L. - Orillia 801 0 1 0 1 0 801 111 801 0 0 0 0 43 801 26 798 7 801 205 798 59
P.H.O.L. - Thunder Bay 286 0 1 0 1 0 286 18 286 0 0 0 0 21 286 1 286 0 286 55 286 35
P.H.O.L. - Sudbury 303 0 2 0 2 0 303 11 303 0 0 0 0 9 303 1 303 2 303 31 303 9
P.H.O.L. - Hamilton 1563 0 5 0 5 0 1558 68 1558 0 0 0 0 45 1559 13 1558 12 1558 214 1558 92
P.H.O.L. - Peterborough 573 0 0 0 0 0 573 45 566 0 0 0 0 11 566 1 564 1 566 90 564 43
St. Joseph's - Hamilton 20188 0 4 40 44 1 20182 1625 20182 2 0 651 0 0 20182 196 20182 54 20182 1839 0 0
Province of Ontario 78935 4 51 123 178 4 78048 5672 56920 2 4 745 2 1547 56924 925 56583 192 56874 7421 25999 1192
Manitoba 49784 1 30 72 103 0 49784 1099 2324 2 8 74 3 0 2324 37 3570 8 2324 270 3376 77
Province of Saskatchewan 24327 2 99 135 236 0 24296 1199 4208 0 2 196 42 0 4207 76 4207 18 4207 592 4204 238
Province of Alberta 68989 1 142 348 491 2 27737 2997 27737 1 45 667 180 0 27737 283 27737 154 27737 3283 27737 1394
Prairies 143100 4 271 555 830 2 101817 5295 34269 3 55 937 225 0 34268 396 35514 180 34268 4145 35317 1709
British Columbia 170466 5 126 5 379 87 166752 8900 20661 6 9 1060 208 157 20661 398 20657 101 20225 3252 20273 658
Yukon 5280 1 2 2 7 7 5290 300 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Northwest Territories 1098 0 33 1 34 0 1039 107 86 0 0 1 0 0 86 2 86 0 1038 120 86 1
Nunavut 15195 0 0 0 0 0 15180 20 N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C.
Territories 21573 1 35 3 41 7 21509 427 112 0 0 2 0 0 112 3 112 0 1064 129 109 1
Canada 515836 19 493 1804 2561 122 454262 28491 136774 19 120 3144 473 1858 137202 2374 137512 988 127479 17380 98352 3922

The data in the RVDSS report represent surveillance data available at the time of writing. Data not collected by reporting lab denoted by N.C.

The reporting laboratory previously listed as CHEO - Ottawa is now listed as EORLA to better reflect data submitted by this provider.

Specimens from Yukon (YT) are sent to reference laboratories in British Columbia and reported results reflect specimens identified as originating from YT.

Results from British Columbia comprise of specimens from the following sites: BC Children's and Women's Hospital, Children's and Women's Hospital Laboratory, Fraser Health Medical Microbiology Laboratory, Island Health, Providence Health Care, Powell River Hospital, St. Paul's Hospital, Vancouver General Hospital, Victoria General Hospital, BCCDC Public Health Laboratory, Interior Health Authority sites and Northern Health Authority sites.

Delays in the reporting of data may cause data to change retrospectively.

For British Columbia, only data from subtyped influenza A specimens are included in the weekly number of influenza detections. The sum of A(H1N1)pdm09, A(H3), and A(UnS) positive results may not equal the sum of total Flu A positive results.

Positive respiratory virus tests historical comparison

Figure 1: Positive respiratory virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season

Figure 1

Shaded area represents the maximum and minimum % of respiratory virus tests positive reported by week from seasons 2014-2015 to 2019-2020

Note: Data from week 11 of the 2019-2020 season onwards are excluded from the historical comparison due to the COVID-19 pandemic

Note: % Tests Positive scale changes across the dashed line

a Human coronavirus excludes human coronaviruses SARS-CoV, MERS-CoV and SARS-CoV-2; Includes seasonal human coronaviruses HCoV-229E, HCoV-OC43, HCoV-NL63, HCoV-HKU1.

Figure 1: Positive respiratory virus tests (%) reported by participating laboratories in Canada by surveillance week compared to average and range from 2014-2015 to 2019-2020 season
Week Week end 2021-2022 A% 2020-2021 A% Max A% Base Min A% Base Av A% Base 2021-2022 B% 2020-2021 B% Max B% Base Min B% Base Av B% Base 2021-2022 RSV% 2020-2021 RSV% Max RSV% Base Min RSV% Base Av RSV% Base 2021-2022 HPIV% 2020-2021 HPIV% Max HPIV% Base Min HPIV% Base Av HPIV% Base 2021-2022 ADV% 2020-2021 ADV% Max ADV% Base Min ADV% Base Av ADV% Base 2021-2022 HMPV% 2020-2021 HMPV% Max HMPV% Base Min HMPV% Base Av HMPV% Base 2021-2022 EV/RV% 2020-2021 EV/RV% Max EV/RV% Base Min EV/RV% Base Av EV/RV% Base 2021-2022 HCoV% 2020-2021 HCoV% Max HCoV% Base Min HCoV% Base Av HCoV% Base
35 2021-09-04 0.04 0.00 1.60 0.11 0.68 0.00 0.02 0.28 0.00 0.13 4.79 0.02 1.34 0.38 0.60 5.99 0.08 3.16 1.15 2.42 1.18 0.27 1.74 0.99 1.43 0.23 0.17 2.04 0.10 0.77 21.97 9.07 27.19 22.44 24.78 1.05 0.06 0.76 0.18 0.45
36 2021-09-11 0.01 0.00 2.11 0.23 0.98 0.00 0.00 0.55 0.00 0.15 7.18 0.04 1.09 0.22 0.57 4.92 0.20 3.31 1.35 2.32 1.15 0.40 2.85 1.42 1.87 0.24 0.06 0.84 0.10 0.48 18.62 8.13 30.69 23.30 26.31 0.62 0.00 0.38 0.12 0.22
37 2021-09-18 0.03 0.00 1.59 0.36 0.87 0.00 0.00 0.19 0.04 0.12 8.09 0.02 1.37 0.31 0.64 5.97 0.13 3.26 1.65 2.40 0.81 0.35 2.44 1.38 1.86 0.17 0.05 1.61 0.00 0.51 27.46 8.07 33.58 27.74 31.68 0.44 0.05 0.56 0.00 0.26
38 2021-09-25 0.00 0.02 2.15 0.43 1.16 0.00 0.00 0.21 0.00 0.14 7.63 0.10 1.24 0.37 0.64 4.73 0.07 2.87 1.92 2.33 0.82 0.58 2.04 1.11 1.63 0.37 0.02 1.43 0.06 0.47 33.16 15.67 39.57 32.80 35.33 0.67 0.00 1.36 0.06 0.43
39 2021-10-02 0.01 0.00 2.65 0.57 1.53 0.00 0.00 0.29 0.09 0.18 9.01 0.05 1.29 0.41 0.68 8.12 0.02 3.01 1.70 2.24 1.14 0.19 2.27 1.04 1.66 0.17 0.04 0.72 0.05 0.28 30.02 24.12 40.59 34.87 37.68 0.62 0.05 0.66 0.07 0.45
40 2021-10-09 0.00 0.00 2.17 1.01 1.58 0.02 0.00 0.20 0.05 0.11 8.98 0.07 1.39 0.34 0.67 8.19 0.02 3.28 1.90 2.43 1.31 0.44 2.25 1.39 1.82 0.16 0.00 0.92 0.05 0.34 26.24 16.62 41.29 33.00 35.43 0.57 0.09 1.08 0.22 0.58
41 2021-10-16 0.03 0.01 2.66 1.05 1.57 0.03 0.00 0.36 0.03 0.16 10.07 0.10 1.74 0.58 0.98 10.46 0.06 3.70 1.94 2.74 1.37 0.37 1.91 1.28 1.70 0.20 0.19 0.95 0.04 0.46 22.91 15.48 33.62 26.94 29.81 1.69 0.02 0.70 0.00 0.33
42 2021-10-23 0.03 0.00 2.96 0.77 1.92 0.02 0.00 0.45 0.05 0.25 8.65 0.07 2.11 0.63 1.14 10.01 0.06 3.89 2.64 3.20 2.54 0.47 2.38 1.47 1.86 0.15 0.06 0.89 0.15 0.38 22.17 13.60 32.62 24.54 27.82 1.07 0.00 1.18 0.20 0.49
43 2021-10-30 0.03 0.01 5.23 0.68 2.60 0.02 0.00 0.55 0.06 0.23 8.55 0.07 2.16 0.55 1.32 9.38 0.07 3.98 3.18 3.56 1.15 0.37 2.42 1.63 1.96 0.36 0.02 1.64 0.12 0.57 19.64 13.14 28.73 21.67 24.95 1.05 0.00 2.35 0.27 0.75
44 2021-11-06 0.10 0.04 8.42 1.08 3.39 0.10 0.03 0.71 0.12 0.31 8.19 0.05 3.35 0.83 1.92 10.27 0.03 4.81 2.94 3.70 1.42 0.22 2.88 1.18 2.20 0.77 0.13 1.08 0.23 0.47 21.44 9.23 23.82 16.75 21.34 2.21 0.00 2.59 0.21 0.88
45 2021-11-13 0.07 0.02 9.83 1.18 4.19 0.06 0.02 0.97 0.22 0.44 7.33 0.04 4.43 1.29 2.59 9.97 0.01 5.42 2.53 4.01 1.61 0.33 2.68 2.02 2.42 0.64 0.01 1.30 0.04 0.77 22.40 9.70 23.08 15.17 20.56 2.54 0.03 2.74 0.52 0.96
46 2021-11-20 0.10 0.03 13.95 1.42 5.47 0.05 0.01 1.49 0.09 0.58 7.49 0.06 6.33 1.38 3.29 8.29 0.04 5.72 1.62 4.19 2.51 0.30 2.90 1.99 2.53 0.99 0.04 1.43 0.18 0.79 21.37 9.02 22.77 15.28 19.27 3.05 0.03 3.32 0.46 1.25
47 2021-11-27 0.12 0.03 15.24 1.25 6.91 0.07 0.04 2.13 0.13 0.80 8.48 0.03 8.69 1.79 4.46 7.04 0.06 7.00 2.36 4.72 1.94 0.32 2.95 1.83 2.35 1.01 0.02 2.02 0.09 0.89 18.53 8.44 20.84 12.15 16.09 3.93 0.04 3.26 0.37 1.25
48 2021-12-04 0.19 0.04 18.07 0.76 9.40 0.15 0.01 3.18 0.08 1.20 9.34 0.02 9.47 3.11 5.72 5.77 0.02 6.14 3.03 4.18 1.89 0.35 3.34 1.66 2.48 1.48 0.02 1.94 0.31 1.08 16.61 7.94 16.72 12.69 13.83 4.96 0.02 4.30 1.00 2.04
49 2021-12-11 0.23 0.03 19.52 1.43 11.41 0.05 0.01 4.21 0.19 1.60 10.51 0.06 12.26 4.87 7.12 3.97 0.00 5.65 2.94 4.19 2.48 0.54 3.03 1.84 2.49 1.22 0.05 2.80 0.49 1.46 14.56 6.21 16.32 10.72 13.07 6.58 0.05 5.19 0.84 2.52
50 2021-12-18 0.23 0.01 26.42 1.97 14.27 0.02 0.01 7.95 0.15 2.55 11.21 0.07 13.19 5.39 7.93 3.23 0.06 5.95 2.54 4.27 2.72 0.51 3.27 1.49 2.45 1.08 0.02 3.32 0.46 1.70 12.39 6.62 13.85 8.43 10.90 7.29 0.11 6.04 1.54 3.16
51 2021-12-25 0.18 0.00 28.53 2.27 16.81 0.02 0.01 10.44 0.19 3.30 9.26 0.07 15.23 6.52 9.27 3.01 0.04 6.71 2.94 3.95 2.54 0.58 3.20 1.36 2.04 1.20 0.04 4.39 0.37 2.44 9.95 5.65 14.18 8.81 10.48 8.18 0.05 6.68 1.87 3.72
52 2022-01-01 0.09 0.00 33.97 3.30 20.41 0.01 0.00 12.73 0.23 4.07 6.96 0.01 17.80 6.83 10.39 2.13 0.03 5.08 2.87 3.75 1.92 0.48 2.59 1.20 1.76 1.00 0.11 3.81 0.41 2.44 7.70 6.53 14.41 6.24 9.23 10.36 0.07 6.73 2.78 4.75
1 2022-01-08 0.08 0.00 30.93 4.58 19.55 0.00 0.00 10.34 0.22 3.86 5.47 0.04 15.62 7.12 10.17 1.84 0.12 5.08 2.68 3.34 1.84 0.81 2.67 0.85 1.54 0.72 0.06 4.45 0.28 2.70 5.71 5.43 11.09 4.36 7.42 9.27 0.12 7.77 3.07 5.16
2 2022-01-15 0.11 0.00 26.80 5.46 19.10 0.01 0.00 11.01 0.29 3.91 4.49 0.07 14.05 6.60 9.63 1.19 0.08 4.12 2.46 3.05 1.13 0.82 2.15 0.87 1.37 0.38 0.03 4.76 0.42 2.66 3.98 5.18 9.55 4.31 6.79 7.49 0.16 7.89 2.84 5.44
3 2022-01-22 0.04 0.01 28.20 9.13 18.94 0.01 0.01 12.75 0.35 4.69 3.55 0.03 15.56 6.72 10.32 0.76 0.05 3.25 2.59 2.82 1.34 0.40 2.10 1.15 1.45 0.24 0.11 5.56 0.47 3.13 3.11 3.56 8.42 4.44 6.01 4.97 0.26 7.90 4.17 6.11
4 2022-01-29 0.05 0.00 27.01 12.34 18.81 0.00 0.00 12.74 0.41 5.15 2.43 0.05 15.88 7.02 11.23 0.64 0.06 3.12 1.77 2.55 1.18 0.46 1.83 1.11 1.49 0.23 0.12 5.19 0.55 3.01 2.59 3.87 9.04 4.89 6.41 3.92 0.16 7.86 3.79 6.08
5 2022-02-05 0.03 0.00 23.66 15.78 19.14 0.01 0.00 14.84 0.41 5.76 2.28 0.04 16.33 7.17 11.49 0.48 0.06 3.48 1.70 2.39 1.57 0.29 1.93 1.36 1.62 0.25 0.16 5.70 0.58 3.29 3.02 4.76 9.79 6.06 6.94 2.83 0.13 8.49 4.55 6.84
6 2022-02-12 0.04 0.02 23.36 15.63 18.79 0.01 0.00 16.23 0.44 6.21 2.18 0.08 15.79 6.52 11.70 0.51 0.10 2.89 1.57 2.19 1.44 0.54 1.74 1.25 1.51 0.42 0.19 5.57 0.65 3.39 3.86 5.08 9.89 6.16 6.98 3.01 0.20 8.57 3.48 6.75
7 2022-02-19 0.02 0.00 24.22 15.48 18.52 0.00 0.00 17.02 0.35 6.54 2.24 0.02 15.53 6.95 11.26 0.44 0.00 3.20 1.42 2.12 1.52 0.49 1.61 1.30 1.51 0.44 0.14 6.05 1.45 3.94 4.44 5.56 8.95 6.00 7.02 3.24 0.13 8.02 4.35 6.54
8 2022-02-26 0.06 0.00 28.62 12.42 18.53 0.02 0.00 16.79 0.45 6.60 2.20 0.05 15.47 6.64 10.63 0.73 0.16 3.21 1.31 2.25 1.85 0.72 2.00 1.38 1.67 0.53 0.04 5.74 1.19 4.08 6.30 4.77 8.35 5.20 6.94 3.67 0.14 8.29 4.21 6.60
9 2022-03-05 0.12 0.00 29.30 11.04 18.35 0.00 0.00 15.45 0.74 6.24 2.62 0.01 15.62 6.54 10.04 0.60 0.07 3.35 1.41 2.44 1.90 0.86 1.92 1.09 1.40 0.40 0.11 6.42 1.87 4.38 7.76 5.48 9.04 5.73 7.75 3.32 0.36 8.01 5.09 6.86
10 2022-03-12 0.16 0.00 29.65 8.51 16.81 0.00 0.00 14.86 0.81 6.41 3.27 0.00 14.97 6.35 9.37 0.68 0.06 4.18 1.19 2.69 1.98 0.38 2.23 1.50 1.78 0.51 0.00 6.74 2.26 4.80 8.20 4.62 10.16 5.55 8.08 3.86 0.34 8.34 4.28 7.01
11 2022-03-19 0.27 0.01 24.27 6.74 14.55 0.01 0.00 13.11 1.05 6.86 3.91 0.03 12.11 6.29 8.83 0.66 0.19 4.58 1.35 3.00 1.88 0.63 2.32 1.23 1.69 0.59 0.11 7.94 2.52 4.71 8.93 4.08 9.45 7.15 8.24 3.25 0.33 8.02 4.35 6.23
12 2022-03-26 0.86 0.00 20.91 5.51 12.67 0.00 0.00 11.53 1.51 7.43 4.04 0.07 10.70 6.46 8.12 1.05 0.00 4.95 1.26 3.34 1.71 0.35 2.13 1.84 1.97 0.77 0.14 6.69 3.65 5.19 9.47 4.61 10.26 8.71 9.66 4.38 0.54 6.99 3.95 5.69
13 2022-04-02 1.52 0.00 18.09 4.67 11.66 0.00 0.00 12.55 1.98 7.90 4.27 0.04 9.32 6.45 7.64 1.39 0.18 5.21 1.48 3.68 2.29 0.35 2.12 1.37 1.70 1.28 0.07 6.90 3.95 5.18 8.44 4.86 12.58 7.69 10.26 4.45 0.30 8.16 3.65 5.46
14 2022-04-09 2.46 0.00 17.83 3.21 9.98 0.01 0.00 13.12 2.12 7.88 4.40 0.08 8.09 5.32 6.44 1.18 0.00 6.26 1.67 4.31 1.74 0.34 2.31 1.50 1.86 1.45 0.04 7.70 4.14 6.00 9.21 5.49 13.59 8.60 12.03 4.24 0.41 7.79 3.84 4.87
15 2022-04-16 3.78 0.01 17.75 2.18 8.72 0.02 0.00 12.22 2.00 7.55 3.74 0.11 7.73 4.64 5.97 1.35 0.12 6.94 1.97 4.61 1.71 0.98 2.62 1.64 2.12 1.52 0.04 7.47 3.81 5.94 9.11 8.23 14.59 9.44 13.16 5.00 1.07 5.52 3.23 4.24
16 2022-04-23 6.76 0.00 13.67 2.13 6.80 0.01 0.00 11.94 2.56 7.68 3.13 0.23 6.64 4.40 5.40 2.14 0.16 7.88 1.97 5.20 1.81 0.82 3.21 1.85 2.32 2.00 0.04 7.16 3.71 5.90 8.21 6.18 16.10 10.84 13.78 4.93 0.69 4.99 3.51 4.32

Number of positive respiratory virus tests

Figure 2: Number of positive respiratory virus tests reported by participating laboratories in Canada by surveillance week
Figure 2
Figure 2: Number of positive respiratory virus tests reported by participating laboratories in Canada by surveillance week
Week ParaInfluenza Adenovirus Human metapneumovirus Enterovirus/Rhinovirus Coronavirus Respiratory syncytial virus Influenza
35 158 31 6 557 21 286 3
36 142 33 7 511 14 479 1
37 207 28 6 916 11 628 3
38 179 31 14 1,180 17 649 0
39 329 46 7 1,147 17 771 1
40 313 50 6 920 17 867 2
41 374 49 7 743 48 932 6
42 402 102 6 788 36 941 6
43 391 48 15 729 35 1,033 7
44 405 56 30 777 67 1,134 32
45 447 72 29 932 88 1,144 23
46 366 111 44 869 106 1,076 26
47 337 91 48 795 153 1,236 33
48 275 91 72 736 188 1,526 64
49 219 139 69 758 252 1,849 55
50 189 163 64 684 278 2,268 56
51 165 139 66 508 256 2,414 58
52 109 99 52 374 332 1,906 29
1 93 95 37 280 312 1,378 25
2 62 54 18 178 252 925 28
3 34 60 11 133 154 624 9
4 28 53 10 109 126 355 8
5 19 62 10 115 78 325 6
6 18 51 15 128 70 275 6
7 14 48 14 134 66 266 2
8 22 56 16 179 72 241 9
9 19 61 13 233 71 264 14
10 21 62 16 240 83 305 17
11 20 57 18 252 67 346 29
12 34 56 26 289 104 367 93
13 48 80 45 274 110 420 179
14 43 64 54 310 116 446 313
15 52 67 60 315 154 414 505
16 80 69 77 287 151 401 1,035

Positive influenza (Flu) tests

Figure 3: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Figure 3
Figure 3: Positive influenza (Flu) tests (%) in Canada by region by surveillance week
Week Week end Can Tests Can A% Can B% Atl Tests Atl A% Atl B% QC Tests QC A% QC B% ON Tests ON A% ON B% Pr Tests Pr A% Pr B% BC Tests BC A% BC B% Terr Tests Terr A% Terr B%
35 2021-09-04 7140 0.04 0.00 625 0.00 0.00 848 0.12 0.00 1305 0.00 0.00 2849 0.04 0.00 1025 0.10 0.00 488 0.00 0.00
36 2021-09-11 8012 0.01 0.00 675 0.00 0.00 1369 0.00 0.00 1224 0.08 0.00 3302 0.00 0.00 930 0.00 0.00 512 0.00 0.00
37 2021-09-18 9316 0.03 0.00 1009 0.00 0.00 1718 0.00 0.00 1543 0.06 0.00 3450 0.06 0.00 985 0.00 0.00 611 0.00 0.00
38 2021-09-25 9821 0.00 0.00 1141 0.00 0.00 1502 0.00 0.00 1647 0.00 0.00 3632 0.00 0.00 1192 0.00 0.00 707 0.00 0.00
39 2021-10-02 9691 0.01 0.00 1052 0.00 0.00 1089 0.00 0.00 1954 0.00 0.00 3498 0.03 0.00 1611 0.00 0.00 487 0.00 0.00
40 2021-10-09 10776 0.00 0.02 799 0.00 0.00 1641 0.00 0.12 2059 0.00 0.00 3870 0.00 0.00 1823 0.00 0.00 584 0.00 0.00
41 2021-10-16 10372 0.03 0.03 614 0.00 0.00 1704 0.00 0.18 1950 0.05 0.00 3622 0.03 0.00 1904 0.05 0.00 578 0.00 0.00
42 2021-10-23 12508 0.03 0.02 634 0.00 0.00 2050 0.00 0.00 2269 0.04 0.00 4560 0.00 0.00 2440 0.08 0.04 555 0.18 0.18
43 2021-10-30 13341 0.03 0.02 1086 0.00 0.00 2119 0.05 0.00 2143 0.00 0.00 4645 0.04 0.00 2920 0.00 0.07 428 0.23 0.23
44 2021-11-06 15442 0.10 0.10 577 0.00 0.00 2323 0.00 0.00 2473 0.04 0.00 5012 0.00 0.00 4625 0.30 0.28 432 0.23 0.69
45 2021-11-13 17546 0.07 0.06 1195 0.00 0.00 2441 0.04 0.00 2835 0.04 0.00 5278 0.08 0.00 5054 0.14 0.18 743 0.00 0.13
46 2021-11-20 16418 0.10 0.05 1826 0.00 0.00 2261 0.00 0.04 2619 0.19 0.00 4930 0.04 0.00 4339 0.21 0.18 443 0.23 0.00
47 2021-11-27 16917 0.12 0.07 2042 0.05 0.05 2584 0.12 0.04 2979 0.10 0.00 4842 0.00 0.00 4200 0.33 0.24 270 0.00 0.00
48 2021-12-04 18531 0.19 0.15 3195 0.13 0.09 2471 0.08 0.04 3068 0.16 0.00 4731 0.06 0.00 4846 0.45 0.50 220 0.00 0.00
49 2021-12-11 19974 0.23 0.05 3417 0.09 0.00 2880 0.31 0.14 3420 0.23 0.00 4778 0.25 0.00 5172 0.27 0.10 307 0.00 0.00
50 2021-12-18 22543 0.23 0.02 1860 0.27 0.00 2759 0.14 0.00 3883 0.21 0.00 4878 0.10 0.02 8638 0.35 0.03 525 0.00 0.00
51 2021-12-25 28471 0.18 0.02 1238 0.00 0.00 3049 0.59 0.07 4030 0.07 0.00 5324 0.15 0.00 14257 0.16 0.02 573 0.00 0.17
52 2022-01-01 29555 0.09 0.01 1378 0.29 0.00 2560 0.00 0.00 3665 0.14 0.00 6284 0.13 0.02 13696 0.07 0.01 1972 0.00 0.00
1 2022-01-08 28418 0.08 0.00 967 0.00 0.00 2249 0.18 0.00 3668 0.03 0.00 7731 0.17 0.00 11791 0.05 0.01 2012 0.00 0.00
2 2022-01-15 23659 0.11 0.01 1045 0.19 0.00 1400 0.21 0.00 2903 0.03 0.00 6816 0.16 0.00 9996 0.08 0.03 1499 0.00 0.00
3 2022-01-22 19585 0.04 0.01 1195 0.00 0.00 1223 0.16 0.00 2591 0.00 0.08 5637 0.07 0.00 8275 0.01 0.00 664 0.00 0.00
4 2022-01-29 16496 0.05 0.00 1099 0.00 0.00 1136 0.26 0.00 2367 0.00 0.00 4650 0.06 0.00 6638 0.03 0.00 606 0.00 0.00
5 2022-02-05 15977 0.03 0.01 1058 0.00 0.00 844 0.12 0.00 2126 0.00 0.05 4004 0.10 0.00 6671 0.00 0.00 1274 0.00 0.00
6 2022-02-12 13873 0.04 0.01 1069 0.00 0.00 985 0.10 0.00 1981 0.00 0.00 3025 0.03 0.00 5917 0.05 0.02 896 0.00 0.00
7 2022-02-19 13127 0.02 0.00 1094 0.00 0.00 832 0.00 0.00 1941 0.05 0.00 2745 0.04 0.00 5451 0.00 0.00 1064 0.00 0.00
8 2022-02-26 12180 0.06 0.02 1177 0.00 0.00 875 0.34 0.11 1736 0.17 0.00 2457 0.04 0.00 5256 0.00 0.02 679 0.00 0.00
9 2022-03-05 11282 0.12 0.00 1090 0.00 0.00 911 0.00 0.00 1843 0.11 0.00 2649 0.38 0.00 4242 0.05 0.00 547 0.00 0.00
10 2022-03-12 10752 0.16 0.00 1108 0.00 0.00 1040 0.29 0.00 1763 0.06 0.00 2604 0.35 0.00 3713 0.11 0.00 524 0.00 0.00
11 2022-03-19 10207 0.27 0.01 1097 0.00 0.00 902 0.44 0.00 1652 0.24 0.00 2620 0.61 0.00 3617 0.11 0.03 319 0.00 0.00
12 2022-03-26 10808 0.86 0.00 1247 0.08 0.00 1186 0.93 0.00 1766 0.28 0.00 2739 1.90 0.00 3491 0.66 0.00 379 0.26 0.00
13 2022-04-02 11801 1.52 0.00 1324 0.30 0.00 1484 3.44 0.00 1894 1.11 0.00 3260 2.42 0.00 3668 0.63 0.00 171 0.58 0.00
14 2022-04-09 12696 2.46 0.01 1272 0.63 0.08 1644 6.93 0.00 1874 1.17 0.00 4124 3.13 0.00 3620 0.91 0.00 162 3.70 0.00
15 2022-04-16 13311 3.78 0.02 1093 1.65 0.00 1896 11.45 0.05 1905 2.10 0.05 4161 4.16 0.00 4116 1.09 0.00 140 7.14 0.00
16 2022-04-23 15290 6.76 0.01 1429 1.89 0.00 3060 19.61 0.03 1859 1.83 0.00 4393 6.26 0.00 4347 1.79 0.02 202 9.41 0.00

Positive respiratory syncytial virus (RSV) tests

Figure 4: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Figure 4
Figure 4: Positive respiratory syncytial virus (RSV) tests (%) in Canada by region by surveillance week
Week Week end Can Tests RSV% Atl Tests RSV% QC Tests RSV% ON Tests RSV% Pr Tests RSV% BC Tests RSV% Terr Tests RSV%
35 2021-09-04 5970 4.79 613 0.00 693 37.95 1277 1.49 1875 0.05 1025 0.29 487 0.00
36 2021-09-11 6672 7.18 671 0.60 1069 39.85 1187 3.12 2234 0.22 930 0.54 581 0.34
37 2021-09-18 7761 8.09 997 0.40 1310 40.76 1499 5.07 2361 0.30 985 0.71 609 0.00
38 2021-09-25 8511 7.63 1135 0.00 1356 41.67 1612 3.97 2510 0.32 1192 1.01 706 0.00
39 2021-10-02 8560 9.01 1052 0.10 1104 53.53 1913 7.42 2394 0.54 1611 1.49 486 0.00
40 2021-10-09 9659 8.98 792 0.38 1583 39.36 2015 9.43 2864 0.77 1823 1.59 582 0.00
41 2021-10-16 9259 10.07 608 0.16 1676 42.78 1867 8.36 2627 0.72 1904 2.00 577 0.17
42 2021-10-23 10882 8.65 581 0.17 1845 33.88 2199 9.55 3264 1.01 2440 2.95 553 0.00
43 2021-10-30 12078 8.55 965 0.10 2121 31.02 2105 9.88 3540 1.05 2920 4.35 427 0.47
44 2021-11-06 13841 8.19 564 1.24 2048 26.46 2421 10.45 3768 1.70 4612 5.77 428 0.47
45 2021-11-13 15615 7.33 837 0.84 2239 18.49 2767 9.97 4011 1.75 5024 7.48 737 0.14
46 2021-11-20 14367 7.49 1259 2.54 2064 12.74 2556 13.38 3734 2.25 4312 8.23 442 0.00
47 2021-11-27 14584 8.48 1607 2.68 2132 11.16 2907 13.62 3510 3.87 4160 10.17 268 0.00
48 2021-12-04 16345 9.34 2884 2.67 2164 8.27 3002 14.69 3272 4.68 4806 13.82 217 5.53
49 2021-12-11 17600 10.51 2979 3.63 2519 6.95 3354 19.11 3309 6.20 5134 13.63 305 6.56
50 2021-12-18 20239 11.21 1442 8.18 2354 5.61 3813 15.53 3495 7.44 8611 13.10 524 7.25
51 2021-12-25 26063 9.26 947 6.65 2467 4.82 4029 13.73 3796 9.69 14257 8.86 567 8.47
52 2022-01-01 27388 6.96 1378 4.43 1916 3.60 3664 10.15 4576 9.55 13884 6.64 1970 2.28
1 2022-01-08 25176 5.47 983 6.61 1708 2.93 3668 5.97 5382 6.06 11428 5.90 2007 2.19
2 2022-01-15 20583 4.49 824 6.67 1142 2.10 2903 4.79 4911 4.79 9306 4.82 1497 1.54
3 2022-01-22 17595 3.55 1187 3.54 947 1.37 2591 3.24 4354 3.79 7814 3.90 702 2.14
4 2022-01-29 14630 2.43 935 3.32 827 1.21 2367 1.61 3542 3.87 6356 2.03 603 1.66
5 2022-02-05 14285 2.28 859 1.51 667 1.05 2124 1.65 3006 3.76 6395 2.17 1234 1.46
6 2022-02-12 12590 2.18 998 1.70 749 1.47 1980 0.91 2187 5.49 5784 1.64 892 1.57
7 2022-02-19 11858 2.24 997 1.60 539 0.74 1940 0.98 2008 6.57 5366 1.60 1008 0.89
8 2022-02-26 10935 2.20 1018 1.57 581 0.34 1735 1.21 1718 6.34 5206 1.67 677 0.89
9 2022-03-05 10076 2.62 982 1.83 734 0.95 1843 1.03 1857 7.32 4115 1.92 545 0.92
10 2022-03-12 9339 3.27 914 1.86 720 0.42 1763 1.08 1811 10.38 3609 1.94 522 1.53
11 2022-03-19 8851 3.91 894 2.80 708 0.85 1652 1.27 1799 11.56 3479 2.07 319 4.39
12 2022-03-26 9093 4.04 1027 1.27 828 0.36 1765 0.96 1754 14.60 3343 1.76 376 5.05
13 2022-04-02 9834 4.27 1114 0.81 1012 0.10 1894 0.63 2199 14.05 3448 1.97 167 12.57
14 2022-04-09 10138 4.40 890 1.01 1105 0.18 1873 0.64 2695 12.54 3416 1.90 159 12.58
15 2022-04-16 11075 3.74 1063 1.98 1430 0.21 1904 1.21 2583 11.92 3960 1.21 135 8.15
16 2022-04-23 12810 3.13 1336 1.27 2447 0.12 1859 0.43 2871 10.21 4097 1.49 200 9.50

Positive human parainfluenza virus (HPIV) tests

Figure 5: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Figure 5
Figure 5: Positive human parainfluenza virus (HPIV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HPIV% Atl Tests HPIV% QC Tests HPIV% ON Tests HPIV% Pr Tests HPIV% BC Tests HPIV%
35 2021-09-04 2637 5.99 580 1.38 138 5.07 857 14.47 739 1.89 315 1.59
36 2021-09-11 2884 4.92 653 2.91 149 4.03 805 11.55 955 1.57 317 2.84
37 2021-09-18 3467 5.97 978 3.89 139 0.72 1100 10.73 858 3.03 386 6.22
38 2021-09-25 3783 4.73 1083 3.69 222 0.45 1113 8.18 857 2.33 506 5.34
39 2021-10-02 4050 8.12 1070 4.86 232 1.72 1461 13.07 765 5.88 517 7.16
40 2021-10-09 3822 8.19 721 6.38 314 1.27 1542 12.39 717 5.58 524 6.11
41 2021-10-16 3574 10.46 543 6.45 335 0.90 1461 13.76 725 7.31 510 16.08
42 2021-10-23 4017 10.01 628 5.41 454 0.44 1631 11.77 769 8.19 531 20.90
43 2021-10-30 4170 9.38 822 2.92 414 0.97 1541 11.29 778 8.10 608 20.72
44 2021-11-06 3942 10.27 415 10.84 293 0.34 1690 10.00 835 8.26 708 17.09
45 2021-11-13 4483 9.97 708 6.78 317 0.95 1772 8.47 864 9.72 819 19.78
46 2021-11-20 4413 8.29 597 4.02 349 0.57 1735 6.80 975 9.33 756 17.33
47 2021-11-27 4787 7.04 575 4.35 475 0.84 1968 5.95 1058 7.84 709 15.23
48 2021-12-04 4768 5.77 668 3.29 355 1.13 2055 3.94 960 7.60 723 13.14
49 2021-12-11 5520 3.97 684 1.02 317 0.63 2722 2.94 1063 7.34 733 7.09
50 2021-12-18 5852 3.23 677 2.51 356 1.69 3058 1.60 1020 6.18 741 7.29
51 2021-12-25 5476 3.01 311 0.64 383 3.39 3031 1.55 997 6.12 751 5.59
52 2022-01-01 5124 2.13 132 1.52 287 0.35 2746 0.87 1198 3.92 760 4.61
1 2022-01-08 5049 1.84 59 1.69 228 1.32 2757 0.62 1439 2.64 558 5.91
2 2022-01-15 5216 1.19 66 3.03 776 0.26 2166 0.32 1609 1.55 597 4.36
3 2022-01-22 4459 0.76 202 0.50 196 1.02 1892 0.26 1414 1.27 753 1.06
4 2022-01-29 4392 0.64 144 1.39 208 0.48 1846 0.27 1426 0.84 766 1.04
5 2022-02-05 3959 0.48 193 1.04 169 0.00 1623 0.12 1255 0.32 715 1.54
6 2022-02-12 3514 0.51 188 0.53 214 0.00 1486 0.20 972 0.51 651 1.38
7 2022-02-19 3163 0.44 233 0.00 166 0.60 1397 0.29 806 0.74 557 0.54
8 2022-02-26 3003 0.73 253 0.00 175 1.14 1262 0.16 732 1.09 579 1.73
9 2022-03-05 3180 0.60 206 0.49 190 1.05 1349 0.15 908 0.66 523 1.53
10 2022-03-12 3104 0.68 243 0.00 195 2.05 1266 0.16 863 0.58 531 1.69
11 2022-03-19 3039 0.66 245 0.82 245 0.41 1187 0.25 902 1.00 460 1.09
12 2022-03-19 3251 1.05 205 1.46 258 1.16 1288 0.78 914 0.55 580 2.24
13 2022-04-02 3446 1.39 227 1.32 251 3.59 1363 0.37 1026 1.27 577 3.12
14 2022-04-09 3646 1.18 196 1.53 332 3.01 1286 0.31 1282 1.64 544 0.92
15 2022-04-16 3854 1.35 206 1.46 419 3.10 1225 0.49 1309 1.99 694 0.58
16 2022-04-23 3730 2.14 277 0.36 273 6.59 1239 1.05 1279 2.42 660 2.58

Positive adenovirus (ADV) tests

Figure 6: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Figure 6
Figure 6: Positive adenovirus (ADV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests ADV% Atl Tests ADV% QC Tests ADV% ON Tests ADV% Pr Tests ADV% BC Tests ADV%
35 2021-09-04 2629 1.18 573 1.05 137 4.38 857 1.52 739 0.54 315 0.32
36 2021-09-11 2882 1.15 653 0.61 147 4.76 805 1.61 955 0.63 317 0.95
37 2021-09-18 3469 0.81 980 0.51 138 0.00 1101 1.45 858 0.23 386 1.04
38 2021-09-25 3780 0.82 1083 0.46 219 2.28 1113 0.54 857 0.47 506 2.17
39 2021-10-02 4051 1.14 1071 0.28 232 3.45 1461 1.37 765 1.18 517 1.16
40 2021-10-09 3822 1.31 721 0.14 314 1.91 1542 1.95 717 1.67 524 0.19
41 2021-10-16 3574 1.37 543 0.18 335 5.07 1461 1.57 725 0.97 510 0.20
42 2021-10-23 4018 2.54 628 0.00 455 11.87 1631 2.33 769 0.91 531 0.56
43 2021-10-30 4187 1.15 836 0.12 417 3.12 1541 1.56 778 1.03 608 0.33
44 2021-11-06 3942 1.42 415 0.96 293 1.02 1690 1.60 835 1.44 708 1.41
45 2021-11-13 4480 1.61 705 0.71 317 6.62 1772 1.47 864 1.04 819 1.22
46 2021-11-20 4421 2.51 598 0.50 356 7.30 1735 2.25 975 2.05 756 3.04
47 2021-11-27 4693 1.94 576 0.69 380 3.68 1968 2.69 1058 0.76 709 1.69
48 2021-12-04 4816 1.89 668 0.75 403 4.71 2055 1.95 960 1.46 723 1.80
49 2021-12-11 5614 2.48 684 0.88 411 4.87 2722 3.23 1063 1.03 733 1.91
50 2021-12-18 5999 2.72 677 0.74 503 6.56 3058 2.88 1020 1.67 741 2.70
51 2021-12-25 5474 2.54 314 1.59 378 7.41 3031 2.18 997 1.20 751 3.73
52 2022-01-01 5163 1.92 133 3.76 324 5.56 2747 1.49 1198 1.25 760 2.63
1 2022-01-08 5163 1.84 105 3.81 296 7.43 2757 1.38 1439 0.83 558 3.41
2 2022-01-15 4761 1.13 66 1.52 320 2.19 2167 0.51 1609 1.24 597 2.51
3 2022-01-22 4494 1.34 200 0.50 234 5.98 1892 1.16 1413 0.71 753 1.73
4 2022-01-29 4497 1.18 144 0.69 313 3.19 1846 1.14 1426 0.56 766 1.70
5 2022-02-05 3959 1.57 193 3.63 169 6.51 1623 1.42 1255 0.72 715 1.68
6 2022-02-12 3539 1.44 188 1.60 239 5.02 1486 1.14 972 0.62 651 2.00
7 2022-02-19 3163 1.52 233 2.58 166 7.83 1397 0.72 806 0.99 557 1.97
8 2022-02-26 3035 1.85 254 1.97 205 8.29 1263 0.87 732 1.78 579 1.73
9 2022-03-05 3206 1.90 207 1.93 215 7.44 1349 1.26 908 1.10 523 2.68
10 2022-03-12 3138 1.98 243 0.41 229 7.86 1266 1.11 863 1.74 531 2.64
11 2022-03-19 3039 1.88 245 1.63 245 4.90 1187 0.84 902 2.33 460 2.17
12 2022-03-26 3283 1.71 205 0.49 290 3.45 1288 1.40 914 1.97 580 1.55
13 2022-04-02 3486 2.29 227 0.44 291 8.93 1363 1.10 1026 1.95 577 3.12
14 2022-04-09 3686 1.74 196 1.53 372 4.84 1286 1.24 1282 1.17 544 2.21
15 2022-04-16 3918 1.71 206 2.43 483 2.48 1225 1.31 1309 1.38 694 2.31
16 2022-04-23 3821 1.81 277 1.08 364 4.95 1239 1.21 1279 1.25 660 2.58

Positive human metapneumovirus (HMPV) tests

Figure 7: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Figure 7
Figure 7: Positive human metapneumovirus (HMPV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HMPV% Atl Tests HMPV% QC Tests HMPV% ON Tests HMPV% Pr Tests HMPV% BC Tests HMPV%
35 2021-09-04 2665 0.23 580 0.00 138 2.17 832 0.36 792 0.00 315 0.00
36 2021-09-11 2935 0.24 653 0.00 149 0.67 796 0.50 1015 0.20 317 0.00
37 2021-09-18 3488 0.17 978 0.00 138 1.45 1073 0.19 907 0.11 386 0.26
38 2021-09-25 3810 0.37 1083 0.00 219 1.83 1086 0.74 914 0.00 506 0.40
39 2021-10-02 4057 0.17 1070 0.00 232 0.86 1428 0.21 809 0.00 513 0.39
40 2021-10-09 3769 0.16 721 0.00 238 1.26 1503 0.20 779 0.00 524 0.00
41 2021-10-16 3495 0.20 543 0.18 229 0.87 1436 0.07 777 0.00 510 0.59
42 2021-10-23 3877 0.15 628 0.00 276 0.36 1611 0.12 827 0.00 531 0.56
43 2021-10-30 4115 0.36 836 0.00 313 3.51 1510 0.13 841 0.24 608 0.00
44 2021-11-06 3903 0.77 415 0.00 210 6.19 1663 0.24 906 0.33 708 1.41
45 2021-11-13 4537 0.64 705 0.14 325 4.92 1742 0.17 943 0.21 819 0.85
46 2021-11-20 4435 0.99 597 0.17 349 8.02 1704 0.35 1028 0.49 756 0.53
47 2021-11-27 4739 1.01 575 0.52 380 8.68 1968 0.46 1105 0.00 709 0.42
48 2021-12-04 4875 1.48 668 0.45 403 12.90 2055 0.44 1019 0.29 723 0.69
49 2021-12-11 5658 1.22 684 0.88 411 9.98 2721 0.55 1108 0.54 733 0.14
50 2021-12-18 5920 1.08 677 0.30 397 11.08 3057 0.46 1048 0.38 741 0.00
51 2021-12-25 5508 1.20 311 2.89 378 12.17 3031 0.13 1034 0.29 751 0.53
52 2022-01-01 5190 1.00 132 1.52 321 10.28 2746 0.36 1230 0.16 760 0.66
1 2022-01-08 5173 0.72 101 1.98 295 8.14 2757 0.07 1454 0.21 558 1.08
2 2022-01-15 4797 0.38 66 4.55 320 0.94 2166 0.14 1646 0.43 597 0.34
3 2022-01-22 4500 0.24 202 0.00 227 3.08 1890 0.00 1426 0.21 753 0.13
4 2022-01-29 4429 0.23 144 1.39 228 1.32 1846 0.16 1443 0.14 766 0.00
5 2022-02-05 4038 0.25 193 2.07 233 0.86 1623 0.12 1270 0.08 715 0.14
6 2022-02-12 3549 0.42 188 2.13 239 2.51 1486 0.07 982 0.20 651 0.31
7 2022-02-19 3179 0.44 233 0.86 166 4.22 1397 0.00 822 0.61 557 0.00
8 2022-02-26 3038 0.53 253 0.79 205 3.41 1259 0.08 740 0.68 579 0.17
9 2022-03-05 3233 0.40 206 0.00 235 2.13 1348 0.07 917 0.65 523 0.19
10 2022-03-12 3152 0.51 243 0.41 230 1.74 1266 0.24 876 0.80 531 0.19
11 2022-03-19 3048 0.59 245 1.22 245 1.63 1186 0.00 912 0.66 460 1.09
12 2022-03-26 3367 0.77 205 1.46 367 1.09 1287 0.23 922 1.08 580 1.03
13 2022-04-02 3506 1.28 227 2.20 291 1.72 1363 0.95 1046 1.53 577 1.04
14 2022-04-09 3731 1.45 196 3.57 372 1.88 1285 1.25 1328 1.66 544 0.37
15 2022-04-16 3952 1.52 206 1.46 483 1.86 1225 1.71 1343 1.49 694 1.01
16 2022-04-23 3844 2.00 277 2.17 363 2.20 1237 1.70 1305 2.45 660 1.52

Positive enterovirus/rhinovirus (EV/RV) tests

Figure 8: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Figure 8
Figure 8: Positive enterovirus/rhinovirus (EV/RV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests EV/RV% Atl Tests EV/RV% QC Tests EV/RV% ON Tests EV/RV% Pr Tests EV/RV% BC Tests EV/RV%
35 2021-09-04 2535 21.97 580 21.21 N.A. N.A. 857 26.49 739 21.52 311 14.15
36 2021-09-11 2745 18.62 653 15.62 N.A. N.A. 805 21.24 955 18.74 311 18.01
37 2021-09-18 3336 27.46 978 33.44 N.A. N.A. 1104 27.72 858 22.26 378 23.02
38 2021-09-25 3558 33.16 1083 43.40 N.A. N.A. 1113 31.63 857 25.20 497 27.97
39 2021-10-02 3821 30.02 1070 32.52 N.A. N.A. 1461 32.44 765 21.31 513 30.99
40 2021-10-09 3506 26.24 721 17.48 N.A. N.A. 1542 33.01 717 23.85 515 21.75
41 2021-10-16 3243 22.91 543 16.21 N.A. N.A. 1461 27.24 725 15.17 502 28.88
42 2021-10-23 3555 22.17 628 11.78 N.A. N.A. 1631 25.32 769 21.98 515 25.05
43 2021-10-30 3712 19.64 836 7.06 N.A. N.A. 1540 24.68 778 19.15 539 25.97
44 2021-11-06 3624 21.44 415 16.39 N.A. N.A. 1675 23.28 835 17.96 689 24.38
45 2021-11-13 4161 22.40 709 12.83 N.A. N.A. 1766 27.18 864 21.06 812 21.55
46 2021-11-20 4067 21.37 597 13.57 N.A. N.A. 1735 23.34 975 21.85 743 22.21
47 2021-11-27 4290 18.53 575 11.83 N.A. N.A. 1951 21.78 1058 16.07 694 18.88
48 2021-12-04 4431 16.61 668 10.93 N.A. N.A. 2053 18.56 960 15.31 708 17.23
49 2021-12-11 5206 14.56 684 11.11 N.A. N.A. 2713 14.19 1063 14.77 716 18.30
50 2021-12-18 5522 12.39 677 7.68 N.A. N.A. 3058 10.99 1020 13.24 734 20.57
51 2021-12-25 5104 9.95 311 9.00 N.A. N.A. 3031 7.06 997 12.04 733 18.55
52 2022-01-01 4854 7.70 132 11.36 N.A. N.A. 2746 5.39 1198 9.93 747 11.91
1 2022-01-08 4902 5.71 104 6.73 N.A. N.A. 2757 2.76 1439 7.23 544 15.26
2 2022-01-15 4472 3.98 66 1.52 N.A. N.A. 2166 1.85 1609 4.54 588 10.37
3 2022-01-22 4275 3.11 202 2.97 N.A. N.A. 1892 1.48 1413 4.18 732 5.19
4 2022-01-29 4204 2.59 144 1.39 N.A. N.A. 1846 1.08 1426 3.44 753 5.05
5 2022-02-05 3814 3.02 193 1.55 N.A. N.A. 1623 1.79 1255 4.46 700 3.71
6 2022-02-12 3317 3.86 188 1.06 N.A. N.A. 1486 2.49 972 4.63 645 6.82
7 2022-02-19 3015 4.44 233 0.43 N.A. N.A. 1397 3.08 806 3.85 553 10.13
8 2022-02-26 2841 6.30 253 1.98 N.A. N.A. 1262 5.07 732 6.56 571 10.51
9 2022-03-05 3002 7.76 206 6.80 N.A. N.A. 1349 6.15 908 7.82 514 12.45
10 2022-03-12 2926 8.20 243 5.35 N.A. N.A. 1266 6.08 863 9.04 523 13.38
11 2022-03-19 2822 8.93 245 7.35 N.A. N.A. 1187 7.67 902 9.76 452 12.17
12 2022-03-26 3052 9.47 205 3.41 N.A. N.A. 1288 6.75 914 11.71 572 14.51
13 2022-04-02 3246 8.44 227 9.25 N.A. N.A. 1363 7.34 1026 8.87 562 10.68
14 2022-04-09 3367 9.21 196 8.16 N.A. N.A. 1286 7.54 1282 10.53 530 10.57
15 2022-04-16 3457 9.11 206 12.62 N.A. N.A. 1225 6.37 1309 8.40 682 14.52
16 2022-04-23 3497 8.21 277 7.94 N.A. N.A. 1239 6.21 1279 7.82 645 12.40

Positive human coronavirus (HCoV) tests

Figure 9: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Figure 9
Figure 9: Positive human coronavirus (HCoV) tests (%) in Canada by region by surveillance week
Week Week End Can Tests HCoV% Atl Tests HCoV% QC Tests HCoV% ON Tests HCoV% Pr Tests HCoV% BC Tests HCoV%
35 2021-09-04 1992 1.05 98 0.00 138 0.00 645 1.71 792 1.01 311 0.64
36 2021-09-11 2262 0.62 202 0.00 149 0.00 584 1.03 1015 0.69 307 0.33
37 2021-09-18 2477 0.44 247 0.40 131 0.00 809 0.49 906 0.55 378 0.26
38 2021-09-25 2552 0.67 130 0.00 221 0.00 788 1.14 914 0.88 497 0.00
39 2021-10-02 2721 0.62 120 0.00 232 0.43 1042 0.38 809 1.48 513 0.00
40 2021-10-09 2986 0.57 332 0.30 238 0.00 1118 0.81 779 0.77 515 0.19
41 2021-10-16 2844 1.69 250 1.60 335 0.90 1032 1.55 725 2.90 502 0.80
42 2021-10-23 3351 1.07 353 0.28 453 0.22 1200 1.33 827 1.81 515 0.58
43 2021-10-30 3332 1.05 601 0.67 313 0.64 1042 1.34 778 1.80 593 0.17
44 2021-11-06 3029 2.21 154 3.90 210 2.38 1069 1.87 906 3.64 689 0.44
45 2021-11-13 3464 2.54 326 0.92 317 0.32 1142 2.19 864 6.71 812 0.12
46 2021-11-20 3478 3.05 310 2.90 349 0.86 1047 2.77 1028 4.96 743 1.88
47 2021-11-27 3898 3.93 305 3.61 475 1.47 1317 3.80 1105 6.88 694 1.30
48 2021-12-04 3792 4.96 368 4.89 465 1.94 1225 4.90 1019 8.93 708 1.41
49 2021-12-11 3830 6.58 369 5.42 356 1.97 1281 7.18 1108 11.01 715 1.54
50 2021-12-18 3815 7.29 356 6.18 496 3.02 1181 9.31 1048 10.21 734 3.27
51 2021-12-25 3131 8.18 69 10.14 378 2.91 914 10.83 1034 10.15 733 4.64
52 2022-01-01 3204 10.36 124 14.52 320 2.50 782 14.58 1230 11.63 747 6.56
1 2022-01-08 3367 9.27 99 4.04 296 8.45 966 10.87 1454 9.42 544 7.54
2 2022-01-15 3364 7.49 59 3.39 412 1.21 657 11.26 1646 8.81 588 4.42
3 2022-01-22 3100 4.97 186 1.08 226 2.65 529 6.43 1425 6.32 732 3.01
4 2022-01-29 3211 3.92 108 0.00 312 3.21 593 6.24 1443 4.92 753 1.06
5 2022-02-05 2755 2.83 68 1.47 233 2.15 480 3.33 1270 3.15 700 2.29
6 2022-02-12 2329 3.01 84 0.00 239 1.26 376 3.72 982 3.67 645 2.64
7 2022-02-19 2037 3.24 100 0.00 201 1.00 357 3.64 822 4.38 553 2.71
8 2022-02-26 1962 3.67 124 0.81 194 2.06 331 4.83 740 2.16 571 6.13
9 2022-03-05 2136 3.32 106 0.94 208 0.48 387 6.72 917 2.29 514 4.28
10 2022-03-12 2148 3.86 104 0.96 274 1.09 365 4.93 876 2.97 523 6.69
11 2022-03-19 2064 3.25 104 2.88 275 0.73 321 5.30 912 2.85 452 4.20
12 2022-03-26 2376 4.38 83 1.20 363 1.93 431 5.57 922 3.15 571 7.36
13 2022-04-02 2471 4.45 83 1.20 328 2.13 450 5.78 1046 2.68 562 8.54
14 2022-04-09 2733 4.24 83 6.02 318 4.09 468 3.85 1328 3.39 530 6.60
15 2022-04-16 3079 5.00 105 6.67 465 3.44 484 6.40 1342 2.83 682 9.09
16 2022-04-23 3062 4.93 197 2.03 327 6.73 586 5.97 1305 3.30 645 7.29

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